Free sites

Engaging Sites for your Students

Online Collaboration

Twiddla

Twiddla.com

Twiddla is a real-time online collaboration tool...Twiddla is a free, no-setup, web-based meeting playground. Share websites, graphics, and photos, or start brainstorming on a blank canvas


Scribblar

http://www.scribblar.com

Scribblar is more like a chat room that allows you to draw, text, and chat. It is a great tool for brainstorming and it even has audio available.


Mindmapping and Diagramming

Google Docs